dallas, sandra chapman, founder and chief director of the center for brain health at the university of texas at dallas, and she's the author of "make your brain smarter." welcome to you both. well, dr. fotuhi, let's begin with you, because we heard janice mabry say in the piece she doesn't understand the science, so, help us understand the science. what allows you to say that her brain actually changed? - many different studies using mri have shown that individual interventions that we do, such as stress reduction, increase someone's fitness, and memory stimulation individually increase the size of the brain, and we can see these on mris. what we do, we provide a combination of these interventions, and that's why we see results. - and you're saying that in her case, she literally went from someone who had been told, "you have alzheimer's" to someone who's feeling good and remembering more. - yes. i have cured her fear of alzheimer's, and i explained to her the very first time i saw her that her memory loss issues were minor and that we can improve her memory, and we did. - dr. chapman, let m